The Hawke's Bay Regional Council found the region received 89 per cent of the expected rainfall for the month.
Waikaremoana was the only area that got more than expected, with 128 per cent.
Northern Hawke's Bay received 88 per cent, Tangoio 76 per cent, Kawekas 92 per cent, Ruahines 85 per cent, Heretaunga Plains 96 per cent, Ruataniwha Plains 80 per cent and Southern Hawke's Bay 70 per cent.
Federated Farmers Hawke's Bay president Jim Galloway said autumn had been a good season for farmers until the wet weather blast at the weekend.
"The grass had been growing well, although in the last two weeks of May the grass growth had slowed down with cooler temperatures.
"We're still ahead of normal conditions in terms of grass growth and grass on hand."
He said dumps of rain weren't necessarily bad for farmers in the region but they needed to be separated by fine breaks to dry the land.
"It's good now but it wouldn't take a lot of rain to tip us over into being quite wet.
"Through the early winter it's always that fine line between quite good and quite wet.
Hawke's Bay Fruitgrowers Association president Lesley Wilson said everything was "good as gold" for fruitgrowers in the region as their trees were now dormant after a busy picking season, which ended mid May.